Could you explain Sai Baba's analogy of the mother tortoise and how it relates to a Guru's grace?

In Chapter 19, Sai Baba uses the analogy of a mother tortoise to explain how a Guru can nurture and protect a disciple without direct physical contact or verbal instruction. He describes how a mother tortoise on one riverbank can feed her young on the opposite bank simply with her loving gaze. Baba relates this directly to his own experience, stating, "Just as a mother tortoise feeds her young with her sight alone, such was the way of my Guru; he protected his child with his gaze." This powerful metaphor illustrates that a Guru's grace and blessings are not limited by distance or the need for formal teachings like a mantra. The Guru's merciful glance alone is sufficient to provide spiritual sustenance, contentment, and protection to the devoted disciple.